WANG Ping,LYU Xingguang,LI Min.Effects of Low Temperature Stress on Growth and Physiological Indexes of Watermelon Rootstock Seedlings[J].Northern Horticulture,2017,41(10):35-38.[doi:10.11937/bfyy.201710008]
低温胁迫对西瓜砧木幼苗生长和生理指标的影响
- Title:
- Effects of Low Temperature Stress on Growth and Physiological Indexes of Watermelon Rootstock Seedlings
- Keywords:
- watermelon; rootstock; low temperature; growth indexes; physiological indexes
- 文献标志码:
- A
- 摘要:
- 以4种西瓜砧木幼苗为试材，进行15 ℃/5 ℃(昼/夜)连续7 d低温处理，测定4种西瓜砧木幼苗的生长指标和生理指标。结果表明：低温胁迫后西瓜砧木材料“黄金搭档”株高、茎粗、地上部鲜质量、根鲜质量的相对生长量均高于其它砧木；根系活力、可溶性糖含量、脯氨酸(Pro)含量、超氧化物歧化酶(SOD)和过氧化物酶(POD)活性亦不同程度高于其它砧木，而丙二醛(MDA)含量则显著低于其它砧木，可见西瓜砧木材料“黄金搭档”值得在西瓜耐低温生产中推广应用。
- Abstract:
- Effects of low temperature stress(15 ℃/5 ℃，day/night，for 7 d) on growth and physiological indexes of four species of watermelon rootstocks seedlings were studied.The results showed that，plant height，stem diameter，shoot fresh weight，root fresh weight,root activity,soluble sugar content,proline (Pro) content，superoxide dismutase (SOD) activity，peroxidase (POD)activity of ‘Huangjindadang’ seedlings were the highest after low temperature，but malondialdehyde (MDA) content was opposite.It was visible that ‘Huangjindadang’ was worthy of popularization and application in the low temperature production of watermelon.
参考文献/References:
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备注/Memo
第一作者简介：王萍（1992-），女，山东烟台人，硕士研究生，研究方向为蔬菜栽培生理。Email:18354267801@163.com.责任作者：李敏（1964-），女，山东龙口人，博士，教授，现主要从事蔬菜栽培生理等研究工作。E-mail：minli@qau.edu.cn.基金项目：“十二五”国家科技支撑计划资助项目（2014BAD05B03）；山东省现代农业产业技术体系资助项目（SDAIT-05-09）；青岛市现代农业产业技术体系资助项目（2316109）。